中国物理B ›› 2021, Vol. 30 ›› Issue (2): 24204-0.doi: 10.1088/1674-1056/abc159

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  • 收稿日期:2020-08-19 修回日期:2020-09-08 接受日期:2020-10-15 出版日期:2021-01-18 发布日期:2021-01-18

Ground-state cooling based on a three-cavity optomechanical system in the unresolved-sideband regime

Jing Wang(王婧)†   

  1. College of Physics, Tonghua Normal University, Tonghua 134000, China
  • Received:2020-08-19 Revised:2020-09-08 Accepted:2020-10-15 Online:2021-01-18 Published:2021-01-18
  • Contact: Corresponding author. E-mail: pwl1207wj@163.com
  • Supported by:
    Project supported by the Research Fund of Tonghua Normal University (Grant No. 202017ND).

Abstract: In the unresolved sideband regime, we propose a scheme for cooling mechanical resonator close to its ground state in a three-cavity optomechanical system, where the auxiliary cavities are indirectly connected with the mechanical resonator through standard optomechanical subsystem. The standard optomechanical subsystem is driven by a strong pump laser field. With the help of the auxiliary cavities, the heating process is suppressed and the cooling process of the mechanical resonator is enhanced. More importantly, the average phonon number is much less than 1 in a larger range. This means that the mechanical resonator can be cooled down to its ground state. All these interesting features will significantly promote the physical realization of quantum effects in multi-cavity optomechanical systems.

Key words: ground-state cooling, three-cavity optomechanical system, unresolved sideband regime

中图分类号:  (Cavity quantum electrodynamics; micromasers)

  • 42.50.Pq
42.50.Nn (Quantum optical phenomena in absorbing, amplifying, dispersive and conducting media; cooperative phenomena in quantum optical systems) 42.50.Ct (Quantum description of interaction of light and matter; related experiments) 03.65.Yz (Decoherence; open systems; quantum statistical methods)